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UNITED STATES PATENT GEEICE.

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Specification forming part of Letters Patent No.. 36,493, dated September 16, 1862.

To all whom it may concern:

Beit known that I, LEWIS J. ATwooD, of Waterbury, in the county of New Haven `and State of Connecticut, have invented',xmade.and applied to use a certain new and use-ful, Improvement in Lamps; and I do hereby -declare the following to be `a full, clear, and exact description of my said invention, reference being' had to the annexed drawings, making' part 4ot' this specification, wherein- Figure lisa vertical section ot' my improvement in lamps. Fig. 2 is an inverted plan. Fig. 3 is an inverted plan with the wick-tube removed. Fig. 4;' is a side view of the spring that acts on a lever to hold the glass chimney. Fig. 5 is a plan bf the ratchet-cap, and Fig. 6 is asecti'on of the wick-tube and ratchet-cap.

Similar marks of reference denote the same parts. Y y

Myinvention relates to the wellknowfn class of lamps in which a detlector is applied above' the wick-tube, rising within a glass chimney,

and the lamp is adapted especially to the burning of coal-oils.

My invention consists in forming the lower part of the wicktube flaring or bell-muzzling, in order that the wick may be entered more easily and not be liable to catch. I also make use of this flaring wick-tube in combinationv with projections about the middle of the wicktube, to hold the wick-tube, ratchet-cap, and

exterior shell of the burner together. I also,

attach the lower end ofthe spring that is employed in holding on the glass chimney di' rectly to the side ofthe wick-tube without thel employment of solder, and I guide and steady the said spring by the cap that. contains the ratchet forraising and lowering the wick.

In the drawings, a is the screw-cap or exterior shell, setting upon any ordinary reservoir or receptacle for the material to be consumed. This shell rises in the form of an inverted perforated cone to the ring b and receives the base ot' the glass chimney, as seen at c.

d is the ordinary dedector rising above the.

wick-tube e, and f is th'e ratchet for raising and lowering the wick. z' is thev ratchet-cap setting within -the shell a.

In order to secure the ratchetcap fi, shell a,

and wick-tube e together, I provide projections 6 6 on the edges of the wick-tube, near the middle of the same, above the ratchet-eap, and I'spread out the lower end of the wick- Ytube, as at 5, in a Haring o r bell-mouthed 4much better for-entering the wick, because the edges thereof will not catch in the said wick.

g is abent lever passing through the cap at the Apoint l, which forms a fulerum for said lever to move on, and his aspring acting upon the inner end of this lever to cause the angle bent in said lever to hold the glass 'chimney c in place, as seen in Fig. l, and the amount of motion allowed to this lever islimited by small projections 2 2 from the lugs on the ring b. In order to secure this spring h in place, I make two notches therein, as at 3 3, Fig. 4, and lat the side of the opening in the sheel a, through which the wiclctube e passes, I form a notch, as at 4, sufcient to receive the shank of the spring 71., the edges of the shell a entering the notches 3 3. The wick-tube is to be slid through the opening in a after this spring is in place; or the side of the wick-tube may be slightly bent in sutticient to allow the spring to be introduced, when, by forcing into this lower end of the wick-tube the taperingr punch, as aforesaid, the tube will be spread or made bell-mouthed, as at 5, ei'ectually securing the spring in place against the side of the wick-tube. It will be evident that this spring,setting against the side ofthe wicktube, gives facility ior securing the same without the use of solder, and for this purpose rivets or ears might be employed 5' but I prefer the means shown. In order to steady the said spring h and prevent any sidewise movement, I provide a notch in the ratchetcap, as at 7. Fig. 5, contiguous to the wick-tube, and said spring in passing through the said notch is guided and retained in place at the same ti me that it is not prevented from springing as the lever g is pressed upon.

llIy burner is simple, durable, easily constructed, and is not injured in-any of its pa'its by the heat to which it is exposed.

lVhat I claim, and desire to secu re by Letters Patent, is-

1. Forming the lower end of the wick-tube flaring or bell-mouthed,n the manner and for the purposes specified.

2. The ratchet-cup, wick-tube., mnlextel'ior Shell ofthe burner, in Combination with the projections 6 6, near the middle ofthe wicktvuhe and the hell'mouth 5 at the lower end of said wick-tube, wherehythe parts are held together, as set forth.

3. Fastening the lower end of the spring; h against the side of the wick-tube without solder, in substantially the manner specified.

4. The ratchetAcap i, wil-h the notch vi', in combination with the wick-tube Ae and spring l1, for holding the said spring from moving sidewise, substantially as set forth.

In witness whereof I have hereunto set my signature this 7th day of July7 186i?.

LE\VIS J. AT\VOOD.

Titnessesz NORTON J. BUEL,

EDWARD C. BLAKESLEE. 

